Method for producing a heat insulating material composed of a hydrophobic aerogel and the application thereof

a technology of hydrophobic aerogel and heat insulating material, which is applied in the direction of heat-proofing, colloidal chemistry, and silica compounds, etc., can solve the problems of large amount of odor or smoke, high cost, and high risk of loose powder during use, so as to reduce overall production time, enhance aerogel strength, and achieve the effect of appropriate strength and flexibility

Pending Publication Date: 2021-10-28
TAIWAN AEROGEL TECH MATERIAL CO LTD
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0038]6. The comparison between the method of the present invention and the method of the prior art indicates the omission of the washing and replacement step, and the overall production time is reduced by 50%. In the method of the present invention, with the addition of the inorganic binder and the surfactant, the strength of the aerogel is enhanced; therefore, the aerogel board or heat insulating blanket produced has an appropriate strength and flexibility, and the overall structu

Problems solved by technology

An objective of the present invention is to overcome the problem of existing production process using solvent replacement or washing condition such that it is not cost effective due to its overly high cost and overly time-consuming process.
In particular, a known aerogel heat insulating blanket mainly uses aerogel powd

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing a heat insulating material composed of a hydrophobic aerogel and the application thereof
  • Method for producing a heat insulating material composed of a hydrophobic aerogel and the application thereof
  • Method for producing a heat insulating material composed of a hydrophobic aerogel and the application thereof

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0047]Please refer to FIG. 1, a method for producing a heat insulating material composed of an inorganic binder and aerogel according to the present invention is shown, comprising the following steps of: mixing step (S11), hydrolysis step (S12), condensation step (S13), aging step (S14), and drying step (S15), thereby to produce a heat insulating board or brick composed of a hydrophobic aerogel, the board or brick having the properties of high strength, without loose powder, resistant to low temperature and cold resisting.

[0048]Mixing step (S11): mixing one or a plurality of an alkoxysilane compound, an olefin alkoxysilane compound and R group-silicone oligo molecules or any mixture thereof with a small amount of inorganic binder solution, a small amount of halogen-ion-free surfactant and a mixing solvent together to form a mixing solution. The alkoxysilane compound is, such as, tetramethoxysilane (TMOS) or tetraethoxysilane (TEOS); the olefin alkoxysilane compound is, such as, meth...

second embodiment

[0055]Please refer to FIG. 2, a method for producing a heat insulating material composed of an inorganic binder and aerogel according to the present invention is shown, which comprises the following steps of: mixing step (S21), hydrolysis step (S22), condensation step (S23), composition step (S24), aging step (S25), and drying step (S26), thereby to produce a heat insulating blanket composed of a hydrophobic aerogel and inorganic fiber, a blanket composed of aerogel and organic fiber or a foam pad composed of aerogel and organic material, having the properties of high strength, without loose powder, resistant to low temperature and cold resisting.

[0056]Mixing step (S21): mixing one or a plurality of an alkoxysilane compound, an olefin alkoxysilane compound and R group-silicone oligo molecules or any mixture thereof with a small amount of inorganic binder solution, a small amount of halogen-ion-free surfactant and a mixing solvent together to form a mixing solution. The alkoxysilane ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for producing a heat insulating material composed of a hydrophobic aerogel, and the method includes the steps of: (1) mixing step; (2) hydrolysis step; (3) condensation step; (4) aging step; and (5) drying step. In the method, a siloxane compound, an inorganic gel, and a halogen-free surfactant are mixed and then a sol-gel process is performed to produce the aerogel heat-insulating material without water-washing. The produced heat-insulating material has preferable strength, smooth appearance, and low shrinkage and can overcome the powder-dropping problem. By the provided method, an aerogel heat-insulating board can be produced, or an aerogel cold-resisting and heat-insulating blanket can be produced by mixing with a fiber or a foam material.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a method for producing a heat insulating material composed of a hydrophobic aerogel, and particularly to a quick production method for a heat insulating material composed of a hydrophobic aerogel having the properties of low temperature heat insulating and water repellent.BACKGROUND OF THE INVENTION[0002]Aerogel refers to a porous high-tech material having a geometrical network structure, and it has the characteristics of low density (0.003 to 0.2 g / cm3), high specific area (500-2,000 m2 / g) and low thermal conductivity (0.02 to 0.036 w / mK). The porosity of aerogel reaches above 95% and its internal contains a great amount of air; therefore, it has an overall transparent appearance and the characteristics of low thermal conductivity coefficient, low acoustic transmission speed and low dielectric constant, making aerogel as a material with the properties of excellent heat insulation, soundproof, electrical insulation, high a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E04B1/78B01J13/00
CPCE04B1/78B01J13/0091B01J13/0069B01J13/0065B01J13/0056C01B33/157C01B33/1585
Inventor CHEN, JEAN-HONGCHEN, SHIU-SHIUPONG, SHENG-HONG
Owner TAIWAN AEROGEL TECH MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap